HCPL-6551

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL-6551 is a high-speed, single-channel optocoupler featuring an LED input and a totem-pole output stage. It provides electrical isolation between input and output circuits while transmitting digital signals. The device operates with a typical propagation delay of 20 ns and supports data rates up to 10 Mbps. It maintains a high common-mode transient immunity of 10 kV/µs minimum. The unit is housed in a standard 8-pin DIP package, suitable for surface mount or through-hole applications requiring robust signal integrity and galvanic isolation.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High-speed digital signal transmission capability
• Totem-pole output stage for fast switching
• High common-mode transient immunity
• Single-channel configuration

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial automation control systems
• Power supply feedback loops
• Data communication interfaces
• Microprocessor system isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix code on the component marking to ensure correct packaging and temperature range specifications. Confirm that the procurement source provides original manufacturer documentation or authorized distributor certification to guarantee authenticity. Check for RoHS compliance status if required by your manufacturing standards. Ensure storage conditions adhere to moisture sensitivity levels specified in the datasheet prior to assembly.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a single isolated channel with high-speed performance is required. Consider the voltage isolation rating and propagation delay requirements against system timing constraints. Evaluate the operating temperature range to match environmental conditions. Compare pinout compatibility with existing PCB layouts to minimize redesign efforts during integration into new or upgraded electronic assemblies.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to Broadcom's HCPL-65xx series of high-speed optocouplers. These devices are designed for applications demanding rapid signal transfer across isolation barriers. The series typically includes variants with different output configurations and speed grades. This specific model represents a standard offering within the family, balancing speed and isolation performance for general-purpose digital isolation tasks.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct replacements may include other HCPL-6551 variants with different suffixes indicating packaging or temperature differences. Cross-referencing with similar high-speed optocouplers from other manufacturers requires careful verification of pinouts, isolation voltages, and propagation delays to ensure functional equivalence without circuit modification.